We have a Summa S2160T. We print groups of labels back to back. Nothing fancy just rectangles with rounded corners about 2 to 3 inches wide by about 15 to 16 inches long. We group them in 2 row groups to make cutting them down easier. The past couple days I noticed about every 4th or 5th group in a run will cut at least one or both rows about 1/4 inch off on the y axis. All the rollers are down and the material is running fine. Is it possible the rollers are just wearing out? Or is there something else I might be missing?